989074818 has 12 divisors (see below), whose sum is σ = 2142995478. Its totient is φ = 329691600.

The previous prime is 989074769. The next prime is 989074831. The reversal of 989074818 is 818470989.

It can be written as a sum of positive squares in only one way, i.e., 695535129 + 293539689 = 26373^2 + 17133^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27474283 + ... + 27474318.

Almost surely, 2^989074818 is an apocalyptic number.

989074818 is an abundant number, since it is smaller than the sum of its proper divisors (1153920660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989074818 is a wasteful number, since it uses less digits than its factorization.

989074818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54948609 (or 54948606 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 989074818 is about 31449.5599015312. The cubic root of 989074818 is about 996.3449294023.

The spelling of 989074818 in words is "nine hundred eighty-nine million, seventy-four thousand, eight hundred eighteen".